Harleyville is a city located in South Carolina. With a 2020 population of 690, it is the 178th largest city in South Carolina and the 11953rd largest city in the United States. Harleyville is currently declining at a rate of -0.43% annually but its population has increased by 1.92% since the most recent census, which recorded a population of 677 in 2010. Harleyville reached it's highest population of 701 in 2016. Spanning over 1 miles, Harleyville has a population density of 599 people per square mile.
The average household income in Harleyville is $41,786 with a poverty rate of 30.90%. The median rental costs in recent years comes to - per month, and the median house value is $102,700. The median age in Harleyville is 41.1 years, 47.4 years for males, and 40.1 years for females. For every 100 females there are 76.7 males.